The lowest layer of the architecture represents the individual data source types and data sources that IBM Cognos BI supports.

架构的最低层表示IBM Cognos BI支持的单个数据源类型和数据源。

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SDO is an API (application programming interface) that helps simplify and unify data access across different data source types, which is becoming more and more crucial in the IT industry.

如何访问不同数据源类型的数据在IT业界变得越来越重要，SDO是一种应用程序编程接口(API)，可以简化和统一对异构数据的访问。

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In general, there are three kinds of data source types, i. e., demographic data, in-dividual behavioral data and the psychographic or attitudinal data.

一般来说，数据挖掘算法中涉及数据可以归为三种基本的数据类型：人口统计学数据、个体行为数据、心理或态度数据。

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One source of the data inaccuracies is that FINRA and the SEC have two completely different registration systems each revealing different types of information about the brokers on their respective systems.

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